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Characterization of nanometer tungsten powdersLI Huiqian LIN Tao SHAO Huiping WU Chengyi GUO Zhimeng LUO Ji School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China摘 要:<正>Three types of tungsten powders were prepared by hydrogen reduction of three precursor powders at low temperature,which were......
Trans. Nonferrous Met. Soc. China 27(2017) 2727-2732 Removal of tungsten and vanadium from molybdate solutions using ion exchange resin Xian-zheng ZHU, Guang-sheng HUO, Jie NI, Qiong SONG School of Metallurgy and Environment, Central South University, Changsha 410083, China Received 10 August 2016; accepted 17 December 2016 Abstract: The removal of tungsten (W) and vanadium (V) from molybdate......
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-modified TiO2 were prepared by sol-gel method, with Ti(OC2H5)4 and ammonium tungsten partial as precursors. The microstructure and properties of W-modified TiO 2 were characterized by using X-ray diffraction (XRD), UV-Vis spectrophotometer techniques, the Brunauer-Emmett-Teller(BET) theory, as well as scanning electron microscopy(SEM). The effects of tungsten contents(molar ratio), calcination......
Scandia doped tungsten matrix for impregnated cathodeWANG Jinshu,WANG Yanchun,LIU Wei,LI Hongyi,and ZHOU Meiling School of Materials Science and Engineering,Beijing University of Technology,Beijing 100022,China摘 要:As a matrix for Sc-type impregnated cathode,scandia doped tungsten with a uniform distribution of Sc2O3 was obtained by powder metallurgy......
Effects of Rare Earth and Alkaline Earth on Spheroidizing of Eutectic Carbides in Low Tungsten White Cast Iron Fu Hanguang1,Zou Dening2 (1.Department of Mechanical Engineering, Tsinghua University, Beijing 100084 , China;2.School of Metallurgical Engineering, Xi'an University of Architecture &Technology, Xi'an 710055, China) Abstract:Tungsten Alloy White Cast Iron(TAWCI) has great brittleness......
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="ChDivSummary">In this study, near fully dense(96.5%) pure tungsten bulks were additively manufactured and the cracking behavior was investigated. A crack network with a spacing of ~100 lm was observed... temperature difference(7300 K) was much higher than the cracking criterion(800 K) of tungsten,indicating that cracking is almost inevitable in laser additive manufacturing of tungsten. It could be concluded......